Fuel pump is bad...what to replace?
Thread Starter
Melting Slicks
Joined: Apr 2008
Posts: 2,118
Likes: 2
From: Redding CA
Fuel pump is bad...what to replace?
hey guys my fuel pump is bad and im going to replace it...
1. What all should I do or replace when i change out the fuel pump?
2. I would like to get a better fuel pump as well... what kind should i get? WALBRO 255lph?
3. Is there 1 fuel pump or 2?
1. What all should I do or replace when i change out the fuel pump?
2. I would like to get a better fuel pump as well... what kind should i get? WALBRO 255lph?
3. Is there 1 fuel pump or 2?
Tech Contributor
Joined: Jan 2007
Posts: 19,273
Likes: 1,103
From: Dyer, IN
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
I recommend you consult the service manual before you go screwing with the fuel system. There is an electrically driven pump in the driver's side tank and a jet pump in the passenger's side tank.
They are sized to work in conjuction with return flow from the regulator and maintain the same level in both tanks as the fuel level is drawn down. I've seen more than one post from individuals who have "upgraded" their fuel system and now only the driver's side tank level goes down.
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Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
I recommend you consult the service manual before you go screwing with the fuel system. There is an electrically driven pump in the driver's side tank and a jet pump in the passenger's side tank.
They are sized to work in conjuction with return flow from the regulator and maintain the same level in both tanks as the fuel level is drawn down. I've seen more than one post from individuals who have "upgraded" their fuel system and now only the driver's side tank level goes down.
They are sized to work in conjuction with return flow from the regulator and maintain the same level in both tanks as the fuel level is drawn down. I've seen more than one post from individuals who have "upgraded" their fuel system and now only the driver's side tank level goes down.
Highlited in red is wrong, Sorry Ipuig.
Racer
Joined: Aug 2009
Posts: 439
Likes: 1
From: Los Angeles Ca
I know I am getting a walbro in my car but there has been quite a few people with walbros that fail prematurely I havent seen any posts here but alot of people went with a denso 255 over walbro due to the issues
so far all my walbros have been fine.
so far all my walbros have been fine.
Thread Starter
Melting Slicks
Joined: Apr 2008
Posts: 2,118
Likes: 2
From: Redding CA
The problems i am having is after the car is driven and at full operating temps then sits for at least 15-30 mins, the car will have a poor start...the car will start but it has a very low rpm and sounds like it wants to die then after a couple seconds it is fine...the idle seems a little low to me as well..500rpms and car just sounds a little weak...then lastly while driving the car, it will surge a little when on decel or slight accel. anything else the car runs good.
then randomly last week i drove about 15 miles then turned the car off and it sat for about 30mins to 1 hour and it would not start back up...it would turn over but just not fire up. my father sprayed starting fluid into intake and it fired right up.
Only code is BCM-2723 H C
i need to either clean my contacts in ignition or just replace it
will the walbro swap right in...im looking at a walbro fuel pump kit for $110.
Last edited by memphis_vette; Feb 2, 2011 at 02:13 AM.
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
What is wrong with it? Although the description of how the system works in not verbatum out of the service manual but it is technically correct. Fuel flow from the electric pump is used to power the jet (siphon) pump continuosly moving fuel from the passenger side tank to the driver side tank.
Last edited by ipuig; Feb 2, 2011 at 07:31 AM.
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
I have had 3 pumps go out on me within the last 5 yrs , the 1st was the stock pump,I then added the GRJ420 pump with thebucket,this lasted 2yrs,then it was replaced again with the same pump,after 2 more yrs of use this pump went as well,I the had my car in a performance shop & it went out after not driving the car for a year,this was replaced with the GSS307,this is a ford app but I know it works because I had it in the car with 58lbs @ the rail,this too went out from running it out of gas & now in the dilema of changing it out again,so ya I would these pumps do fail frequently,last 1 was my fault,where did u find the kit for 110.00?
Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
What is wrong with it? Although the description of how the system works in not verbatum out of the service manual but it is technically correct. Fuel flow from the electric pump is used to power the jet (siphon) pump continuosly moving fuel from the passenger side tank to the driver side tank.
through a feed pipe, to a siphon jet pump in
the right tank. The jet pump relies on the
venturi effect to use pressurized fuel to
draw additional fuel from the tank. The
combined fuel then flows from the right
tank to the left tank, through a return
pipe . The jet pump is able to move enough fuel to
ensure that all of the fuel in the right tank
is consumed before the level in the left
tank begins to drop.
Drifting
Joined: Jul 2005
Posts: 1,484
Likes: 27
From: Torrance Calif
Does anyone have a link to a detailed procedure (with pics I hope) of dropping the exhaust, rear and gas tank to replace the pump on the drivers side?
I searched most of last night and it looks like it is a butt ugly job.
(03 late model Z06)
I am draining gas out of it today.
I searched most of last night and it looks like it is a butt ugly job.
(03 late model Z06)
I am draining gas out of it today.
Thread Starter
Melting Slicks
Joined: Apr 2008
Posts: 2,118
Likes: 2
From: Redding CA
I have had 3 pumps go out on me within the last 5 yrs , the 1st was the stock pump,I then added the GRJ420 pump with thebucket,this lasted 2yrs,then it was replaced again with the same pump,after 2 more yrs of use this pump went as well,I the had my car in a performance shop & it went out after not driving the car for a year,this was replaced with the GSS307,this is a ford app but I know it works because I had it in the car with 58lbs @ the rail,this too went out from running it out of gas & now in the dilema of changing it out again,so ya I would these pumps do fail frequently,last 1 was my fault,where did u find the kit for 110.00?
https://www.hinsonsupercars.com/p-80...fuel-pump.aspx
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
Does anyone have a link to a detailed procedure (with pics I hope) of dropping the exhaust, rear and gas tank to replace the pump on the drivers side?
I searched most of last night and it looks like it is a butt ugly job.
(03 late model Z06)
I am draining gas out of it today.
I searched most of last night and it looks like it is a butt ugly job.
(03 late model Z06)
I am draining gas out of it today.
Last edited by zeevette; Feb 2, 2011 at 07:38 PM. Reason: wrong info
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Huh? If he's got a late '03, he WILL have to drop his tank. FFS fuel system access is from the top of the tank.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
